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Re: Question about HFile seeking - HBase - [mail # user]
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...Generally we start with seeking on all the Hfiles corresponding to the region and load the blocks that correspond to that row key specified in the scan. If row1 and row1c are in the sa...
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Author: ramkrishna vasudevan,
2013-05-17, 07:40
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Re: NullPointerException while loading large amount of new rows into HBase, exception is thrown when trying to obtain lock for RowKey - HBase - [mail # user]
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...The lockRow and unlockRow have been replaced by checkAndXXX and increment() apis so that any operation on a particular row can be done automically. Am not sure of the use case that you are a...
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Author: ramkrishna vasudevan,
2013-05-17, 03:49
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Re: NullPointerException while loading large amount of new rows into HBase, exception is thrown when trying to obtain lock for RowKey - HBase - [mail # user]
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...Are you trying to get the row lock explicitly ? Using HTable.lockRow? Regards Ram On Thu, May 16, 2013 at 10:46 PM, ramkrishna vasudevan wrote: ...
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Author: ramkrishna vasudevan,
2013-05-16, 17:41
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Re: NullPointerException while loading large amount of new rows into HBase, exception is thrown when trying to obtain lock for RowKey - HBase - [mail # user]
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...Which version of HBase? Regards Ram On Thu, May 16, 2013 at 10:42 PM, Tianying Chang wrote: ...
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Author: ramkrishna vasudevan,
2013-05-16, 17:16
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Re: GET performance degrades over time - HBase - [mail # user]
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...This generally happens when the same block is accessed for the HFile. Are you seeing any contention on the HDFS side? Regards Ram On Thu, May 16, 2013 at 4:19 PM, Bing Jia...
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Author: ramkrishna vasudevan,
2013-05-16, 16:28
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Re: Where is scanner startRow used - HBase - [mail # dev]
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...If this is a regression (but i don't think it to be) may be if you observe this behaviour in any recent versions or it was like that in all the version that you had used earlier that made yo...
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Author: ramkrishna vasudevan,
2013-05-16, 03:23
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Re: Error about rs block seek - HBase - [mail # user]
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...Is it possible to reproduce this with simple test case based on your usecase and data? You can share it so that can really debug the actual problem. Regards Ram On Mon, May 13, 2013 a...
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Author: ramkrishna vasudevan,
2013-05-13, 08:34
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Re: Error about rs block seek - HBase - [mail # user]
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...Your TTL is negative here 'TTL => '-1','. Any reason for it to be negative? This could be a possible reason. Not sure.. Regards Ram On Mon, May 13, 2013 at 7:20 A...
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Author: ramkrishna vasudevan,
2013-05-13, 03:04
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Re: Secure HBase upon Replication - HBase - [mail # user]
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...For instance 0.94.7 and 0.94.7-security? For the 0.94 versions you need to use the tar ball that has security in it. In trunk it is not so. I should have been clear on it. ...
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Author: ramkrishna vasudevan,
2013-05-09, 10:10
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Re: Secure HBase upon Replication - HBase - [mail # user]
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...Which branch are you using? Once you enable security the security feature on that branch starts working. Security if enabled will apply to HDFS and Zookeeper also. I don't think ...
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Author: ramkrishna vasudevan,
2013-05-09, 08:43
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